This is rare... an all-abyssal Hamu Kotarou art.

bakamann said:

This is rare... an all-abyssal Hamu Kotarou art.

Technically is on Twitter, artist or the users who likes to draw votes for certain characters (normally 3, or rarely 4), and post in the hashtags

艦これ版真剣お絵描き60分一本勝負_20170113
艦これ版深夜の真剣お絵描き60分一本勝負

This change every day, so checking Twitter every day gives you the chance to see most of the images related with the results of the votation.

Kicking it back old school.